Table 4.
Features of enrolled Associates in Thailand and Ecuador.
| KPP | Machala | |
|---|---|---|
| Number | 1,246 | 384 |
| Median number of Associates per Initiate | 3 (1–17) | 8 (4–17) |
| Median age in years (range) | 30 (0–96) | 34 (0–87) |
| % female | 57.4% | 65.9% |
| History of flavivirus vaccine* | 18.5% | 11.7% |
| Total % with acute or recent infection | 24.3% | 25.0% |
| Within Initiate's house | 22.0% | 29.1% |
| Neighboring house** | 26.8% | 23.9% |
| RT-PCR positive (n) | 44.2% | 43.2% |
| Among RT-PCR positive Associates, infecting DENV serotype | ||
| DENV-1 | 24.6% | 15.8% |
| DENV-2 | 50.0% | 57.9% |
| DENV-3 | 20.9% | 26.3% |
| DENV-4 | 4.5% | 0% |
| % concordant with Initiate serotype | 94.0% | 66.7% |
| % primary | 11.8% | 39.6% |
| % asymptomatic | 25.1% | 33.3% |
| Mean # adult Aedes females/house | 1.67 (3.41) | 0.95 (1.62) |
| Homes with infections | 1.90 (3.83) | 1.00 (1.76) |
| Homes without infections | 0.99 (1.75) | 0.80 (1.16) |
*
Reported history of JEV vaccine (Thailand) or YFV vaccine (Ecuador).
**
Note that for Thailand, Associate houses were enrolled out to a radius of 200 m if anyone in the home reported a history of recent fever; for Ecuador, Associate houses were enrolled in the four cardinal directions and 94% were within 100 m of the Initiate house (15).